Atari 2600 / F3
BEING VERIFIEDRMW Write-Backs to $00 Cause Spurious VSYNC
- STATUS
- BEING VERIFIED
- AREA
- Timing / bus
- RECORDED
- 2026-03-25
- PUBLIC SOURCE
- Research dossier / finding 3
- RECORD ID
atari2600-f3- SNAPSHOT
a58ea4ac37c644e9
Game: Pac-Man (NA) Symptom: Graphics "jumping and streaking" — display constantly resetting mid-frame. Root cause: Pac-Man uses ROR $00 (Read-Modify-Write on collision register/VSYNC address) for RNG.
Raw traces, ROM material, local paths, and personal data are not part of this public record.
01INPUT IDhash receipt
02BYTE MAPdecode coverage
03CPU STATEtrace comparison
04BUS / TIMEordered effects
05OUTPUTvisual · audio · input
06ARTIFACTbuild identity